Work-rest for lathes.



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mmm m amm m WKN E wg i WILLIAM F. PARSONS, OF BEVERLY, MASSACHUSETTS.

WORK-REST FOR LATHES.

Specification of Letters Patent.

Patented Jan. 2, 190,6.

Application iiled May l0, 1905. Serial No. 259,732.

T0 all whom, it 'may concern:

Be it known that I, WILLIAM FREDERICK PARSONS, acitizen of the United States, residing at Beverly, inthe county of Essex and Commonwealth of Massachusetts, have invented certain Improvements in Work-Rests for Lathes, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to turning-lathes, and particularly to the means used on lathes for supporting one end or the intermediate portion of the work being operated on.

I have herein shown the preferred form of my invention as embodied in a work-rest for use on a bench-lathe, such as is generally used by jewelers or watchmakers; but it should be understood that my invention is not limited to use with lathes of this type, but may be used advantageously with other types of lathes.

1n the manufacture of jewelry, watches, clocks, and other articles constructed of numerous small parts it is necessary that the machines and devices which are used should be very compact and capable of fine and accurate adjustment; and with this end in view one of the objects of my invention is to provide an improved work-rest which is so constructed that it can be moved into close proximity to the lathe-chuck, and thus enable a short shaft or arbor to be firmly supported at both of its ends.

Another object of my invention is to dispense with an independent support or carrier for the tool-rest, suchas lathes are usually provided with, and to provide an improved work-rest having a tool-rest adjustably connected thereto. y

One important feature of my invention comprises a work-rest having a movable section which can be turned into an inoperative position when work is being placed in the lathe or removed therefrom, and thus obviatel moving the work-rest relatively to the chuck.

Another important feature of my invention consists in a work-rest provided with a plurality of work-engaging members for supporting one end or the intermediate portion of Work, which is clamped at its other end in the chuck of a lathe and a tool-rest connected to the work-rest and having a plurality of work, and still another feature of my invention consists in a work-rest comprising a standard that is provided with adjustable work-engaging members which have their outer faces iush with the face of the standard and a tool-rest connected to said standard and adapted to be adjusted into close proximity tothe cooperating ends of the work-engaging members.

Referring to the drawings, Figure 1 is a perspective view of a bench-lathe provided with a work-rest embodying the preferred form of my invention. Fig. 2 is a side elevation showing the work-rest adjusted in close proximity to the lathe-chuck, a portion of the work-rest being shown in section to illustrate the means for adjusting the work-engaging members. Fig. 3 is a detail view of one of the work-engaging members, and Fig. 4 is a side elevation of a modified form of my invention.

In the drawings, 2designatesabed on which the head t of the lathe is mounted.y A shaft 6 is carried by said head and is provided at one end with a chuck .8, in whichone end of the work is clamped, said shaft being provided with pulleys 10, that receive a belt which imparts rotary movement to the shaft 6 and the work clamped in the chuck. The bed- 2 is provided with ways 14, on which the workrest is slidingly mounted to enable it to be moved toward and away from the chuck'S, said work-rest being heldin adjusted position by a bolt 18, which projects downwardly therefrom through a slot 12 in the bed and which is provided at its lower end with a clamping-nut 20, that engages the underneath surface of the bed and clamps the work-rest securely in position.

The work-rest comprises the standard 16, having adjustably mounted Vin dovetailed slots formed in the face thereof a plurality of work-engaging members 22, which at their cooperating ends 24 engage the end or the intermediate portion of the work clamped in the chuck of the lathe, said standard being provided with an opening 26 in alinement with the cooperating ends of said members. As shown in Fig. 3, each work-engaging member, is provided with a lug 28, in which an adjusting-screw 30 is journaled, said screw entering athreaded opening in the standard and providing a means for varying the positions of the cooperating ends of said members. Preferably the standard 16 is formed in two portions, as shown in Fig. 1, the upper IOO portion 17 of the standard being pivotally connected to the lower portion at 19 and held in operative position by a clamping-screw 21. By constructing the work-rest in this manner the work can be placed in the lathe and removed therefrom without changing the position of the work-rest relatively to the chuck. As shown in Fig. 2, the opening 26 in the standard is of greater diameter than that of the chuck 8, so that the work-engaging members of the work-rest can be adjusted into close proximity to the chuck, and thus insure a rigid support for a short shaft or arbor.

Pivotally mounted on a stud 34, projecting from the standard 16, is a support 36 for the adjustable tool-rest 38, said tool-rest being provided with a cylindrical shank, which is held in the split end of said support by a clamping-screw 40. A slot 42 is formed in the lower end of said support and receives the shank of a headed screw 44, carried by the standard 16, whereby said support is held in adjusted position. By loosening the screw 44 the support 36 can be turned on the stud 34 as a fulcrum to move the tool-rest laterally of the work being operated on, and by loosening the screw the tool-rest can be moved vertically to change the position of its edge relatively to the longitudinal center of lthe work.

A modified form of my invention is shown Y' in Fig. 4, wherein the support for the tool-rest 38 is fastened to the standard 16 by a universal connection comprisingasplit socketon the support which engages a ball-shaped head 35 on the stud 34, the support being adapted to be securely locked in adjusted position by means of a clamping-screw 45, which binds the members comprising the socket to the ball-shaped end of the stud. By connecting the tool-rest to the standard in this manner it is possible to adjust the tool-rest longitudinally of the work. Preferably the standard is provided with a detachable Ibase 15, connected thereto by dowel-pins 13 and a binding-screw 11, as shown in Fig. 4, so that the work-rest can be used on different kinds of lathes by simply changing the base.

Having described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

In a work-rest, a standard provided with a plurality of adjustable work-engaging members, a stud fastened to said standard and provided with a ball-shaped head, a support having a split socket which receives the head of said stud, an adjusting-screw for causing the members comprising said socket to bind upon the head of said stud, a tool-rest vertically and rotatably mounted in said support, and means for holding said tool-rest in adjusted position.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM F. PARSONS.

Witnesses:

F. ROLAND WHIPPLE, GEORGIANA M. STONE. 

